Although the service manual makes many references to this fuse I cannot find any info on its location, except to say that it is in the PDC. It is not identified as "IOD" on the underside of the PDC cover.

I think it is F11 on the attached 'pdf', with F10 being the storage area for lay-up or pre-delivery, but confirmation would be appreciated.

The text is saying that the fuse is for all vehicles at cavity 15. Also when you look at pages 8W-10-4 (gas) and 8W-10-5 (Diesel) you see that in both cases fuse 15 protects circuit A148 10 PK/WT.Fuse 11 is for circuit A110-10VT/RD and protects glowplug relay #2 circuit.